Welcome to this beginner series, in which the one hundred most commonly used words in the English language are used in context. Master them, and you will be on the way to becoming an English speaker!

Sing along with this bright and happy colors song. What's your favorite color?

Chances are you’ve seen pigeons in your neighborhood, but did you know that these birds can fly up to 50 miles per hour or that a baby pigeon is called a "squeaker"?

Enjoy another walk through the fields with pig brothers Piggeldy and Frederick. This time, Piggeldy wants to know what a letter is.

"Enjoy another walk through the fields with brothers Piggeldy and Frederick. This time Piggeldy wants to learn about the concept of cleaning up."

The two little brothers Piggeldy and Frederick go for another walk in the fields. Today Piggeldy wants to know what sayings are.

The group makes a plan to spread word of the Inuit's plight, but there's already a tense situation building, as hungry polar bears enter the village in search of food.

Debbie takes the young reporters along on a hunting trip and shows them one of the last remaining areas for wildlife. We hear more about the strain that a changing climate is placing on these remote and traditional communities.

When a message arrives from an Inuit correspondent, a small team sets off to investigate the environmental changes that threaten the delicate balance of life in the frozen north.

The Gulf Stream plays a big part in maintaining the temperatures we are used to, and Maestro explains that if it is interrupted, parts of the world could become colder as an unexpected result of global warming.

This song teaches about the universal law of gravity and is performed by the Tokens in the style of 1950s doo-wop (an era made popular at the time by films such as Grease and TV series such as Happy Days).

Maestro speaks about the Earth’s atmosphere, and explains how the greenhouse effect is changing the planet’s ability to regulate its own temperature. The kids want to know what is being done about the problem, and what the outcome might be.

Let’s learn some colors and numbers in this simple video for beginners!

It’s very warm for November, and the kids are playing outside. They’re convinced that the greenhouse effect is responsible for the unusual weather, and think it could make a good subject for the next issue of their newspaper.

The kids are frustrated with how slow things seem to be progressing, but Maestro boosts their enthusiasm with some good news: Their search for a workspace is over, and a new environmental movement is born — The Guardians of the Planet!